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2 years ago

PLEASE HELP ME PLEASE AS FAST AS POSSIBLE

Mathematics

1 answer:

Greeley [361]2 years ago

7 0

Answer:

A)3

Step-by-step explanation:

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PLEASE HELP! <br> 15 points i need help plz look at picture

nasty-shy [4]

Answer:

Step-by-step explanation:

hope this helps not sure if right though hard to see picture is blurry when I zoom in

6 0

2 years ago

Read 2 more answers

A large manufacturing firm tests job applicants who recently graduated from college. The test scores are normally distributed wi

Sergeeva-Olga [200]

Answer:

The lowest score a college graduate must be 577.75 or greater to qualify for a responsible position and lie in the upper 6%.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 500

Standard Deviation, σ = 50

We are given that the distribution of test score is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

We have to find the value of x such that the probability is 0.06.

P(X > x) = 6% = 0.06

$P( X > x) = P( z > \displaystyle\frac{x - 500}{50})=0.06$

$= 1 - P( z \leq \displaystyle\frac{x - 500}{50})=0.06$

$=P( z \leq \displaystyle\frac{x - 500}{50})=1-0.06=0.94$

Calculation the value from standard normal z table, we have,

$P(z < 1.555) = 0.94$

$\displaystyle\frac{x - 500}{50} = 1.555\\x = 577.75$

Hence, the lowest score a college graduate must be 577.75 or greater to qualify for a responsible position and lie in the upper 6%.

5 0

3 years ago

a boat takes 8 hours to go 6 miles upstream and come back to the starting point. if the speed of the boat is 4 miles per hour in

Romashka-Z-Leto [24]

Consider this option:
1. if to re-write the condition, it is given: total time t=8 hours; upstream=downstream=6 miles; V_boat=4 m/h., V_current=V=?
2. note, that total time=time_upstream+time_downstream, where time_upstream=6miles/(V_boat-V) and time_downstream=6miles/(V_boat+V). Using this it is possible to make up and solve the following equation:
$\frac{6}{4+V} + \frac{6}{4-V} =8; \ =\ \textgreater \ \ \frac{V^2-10}{16-V^2}=0; \ =\ \textgreater \ \ V=\sqrt{10} \ \frac{miles}{hour}$

answer: √10

P.S. the roots of the equation are √10 and (-√10), only positive values is needed for V.

7 0

2 years ago

3, 5, 6, 1, 3, 11,7

stiv31 [10]

Answer:

range= 10

median= 5

mode= 3

Variance= 11 (rounded) normal answer without rounding 10.809524

Midrange= 6

3 0

2 years ago

The price of an item has been reduced h 45% the original price was $49

borishaifa [10]

Answer:

$26.95, you save $22.05

Step-by-step explanation:

$49 x 0.45 = $22.05 savings, 49 - 22.05 = 26.95

3 0

2 years ago